How to stop heavy postcoital bleeding immediately

possible causes of post-coital bleeding ?
there are many medical condition can cause such a condition such as :
- vaginal injury due to vaginal dryness
- sexual intercourse prior to normal period menstration 
- endometrial pylops 
- cervix abnormalties
what to do next :
- next step is consult OBGYN doctor to do needed tests and get diagnosed, and for the time being, vaginal sexual intercourse should be avoided, treatment options are according to the cause, as example, vaginal injuries will be treated conservativly, vaginal intercouse should be avoided for 2 weeks , and doctor will prescribe vaginal wash as well as topical antibiotic if injury are superficial until its healed on its own, and in the future, violant sexual practice should be avoided and lubricants are a must, on the other hand, pylops will be treated surgically , as well as cervix abnormatlies will be treated surgically 
what is the needed tests :
- clinical physcial examination , US imaging test , Hpv test , papsmear test